body, html {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  font-family: "Source Sans Pro", "Microsoft Yahei", sans-serif;
  font-size: 14px;
  position: relative;
}
* {
  box-sizing: border-box;
}
a,a:hover,a:active,a:visited{
  text-decoration: none;
}
ul,li{
  margin: 0;
  padding: 0;
  list-style-type: none;
}
.main_font{
  color: #337ab7;
}
/*p,ul,li,ol{
  margin: 0;
  padding: 0;
}*/
/*p{
  line-height: 30px;
}*/
/*.wrap{
  width: 1024px;
  margin: auto;
}*/
/*.section{
  margin: 20px auto;
}*/
.section{
  padding: 50px 0;
}
.logo{
  position: absolute;
  top: 13px;
  left: 160px;  
}
.home_link-btn{
  position: absolute;
  top: 20px;
  right: 60px;  
}
.home_link-item {
  /*margin: 10px;*/
  display: inline-block;
  padding: 15px 20px;
  position: relative;
  /*width: 150px;
  height: 35px;*/
  color: #fff;
  font-size: 18px;
  background-size: cover;
  background-position: 0 0;
  background-repeat: no-repeat;
}
.home_link-item:hover{
  color: #fff;
  text-decoration: none;
}
.home_link-item.on{
  border-bottom: 2px solid #fff;  
}
.link-btn {
  position: absolute;
  top: 20px;
  right: 60px;
}
.link-item {
  margin: 10px;
  display: inline-block;
  font-size: 18px;
  position: relative;
  width: 135px;
  height: 42px;
  line-height: 42px;
  border-radius: 25px;
  /*background-size: cover;
  background-position: 0 0;
  background-repeat: no-repeat;*/
  text-align: center;
}
.link-item.on{
  background: #337ab7;
  color: #fff;  
}
.about-bg {
  width: 100%;
  height: 800px;
  background: url(../images/bg_about.jpg) center center no-repeat;
  background-size: cover;
  text-align:center;
}
.about-title{
  padding-top: 320px;
}
.about-title-exp{
  padding: 10px 0;
  text-indent: 26px;
  line-height: 21px;
  color: #fff;
}
.box-avg{
  position: relative;
}
.box-left-fixed{
  position: absolute;
  left: 0;
  width: 600px;
}
.box-right-content{
  margin-left: 620px;
}
.solution-bg {
  position: absolute;
  left:-600px;
  width: 1200px;
  height: 615px;
  /*background: url(../images/bg_solution.png) left 35px no-repeat;*/
  /*background-size: 600px;*/
  background: url(../images/bg_repeat.png) -600px top;
}
.solution-bg-fixed {
  width: 100%;
  height: 500px;
  background: url(../images/bg_part.jpg) fixed;
  background-size: cover;
  text-align:center;
}
.solution-title img{
  margin-top:105px;
}
.solution-nav{
  margin: 30px auto;
  text-align: center;
}
.solution-nav a{
  display: inline-block;
  width: 270px;
  padding: 10px 0;
  color: rgb(255,255,255);
  background: #00adef;
  border: 1px solid #fff;
  font-size: 18px;
  text-align: center;
}
.solution-nav a:hover{
  text-decoration: none;
  border: 1px solid #00adef;
  color: #00adef;
  background: #fff;
}
#s3 .container{
  position: relative;  
  height: 150px;
}
.part-nav{
  /* position: absolute;
  top: -180px; */
  width: 100%;
  margin-top: 80px;
  padding: 0;
  background: #f1f1f1;
  text-align: center;
  display: flex;
}
.part-nav li{
  /*width: 14%;*/
  flex: 1;
  height: 240px;
  border-left: 1px solid #cccccc;
  position: relative;
  overflow: hidden;
  display: inline-block;
  padding: 25px 0;
}
.part-nav a{
  width: 100%;
  display: block;
  padding: 0 8px;
  text-align: center;
}
.part-nav a:hover{
  color: #000;
  text-decoration: none;
}
.part-nav a img{
  overflow: hidden;
  margin: 10px auto;
}
.part-nav p{
  margin-top: 10px;
  clear: both;
  font-size: 15px;
  color: #313d32;
  font-weight: bold;
}
.part-nav span{
  margin-top: 5px;
  clear: both;
  font-size: 12px;
  color: #555b56;
  overflow: hidden;
  display: -webkit-box;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
#s4{
  margin-top: 80px;
}
.case-bg {
  position: relative;
  width: 100%;
  height: 800px;
  padding: 150px 0;
  background: url(../images/banner.jpg);
  background-size: cover;
}
/*.more-case{
  position: absolute;
  right: 150px;
  top: 150px;
}*/
.nav-bg{
  position: fixed;
  top: 0;
  width: 100%;
  height: 80px;
  background: rgba(0,0,0,.5);
  z-index: 99;
}
.case-l{
  display: inline-block;
  width: 80%;
}
.case-l li{
  display: inline-block;
  height: 200px;
  overflow: hidden;
  text-align: center;
}
.case-l li p{
  display: none;
  height: 100%;
  background:rgba(0,0,0,.5);
}
.case-l li a{
  display: block;
  height: 100%;
  padding-top: 92px;
  color: #fff;
  text-align: center;
}
.case-l li a:hover{
  text-decoration: none;
}
.case-l-1{
  width: 60%;
  background: url(../images/case-0.png) center center no-repeat;
  background-size: 100%;
}
.case-l-2{
  width: 39%;
  background: url(../images/case-1.png) 5px center no-repeat;
  background-size: 100%;
}
.case-l-3{
  width: 40%;
  background: url(../images/case-2.png) center center no-repeat;
  background-size: 100%;
}
.case-l-4{
  width: 59%;
  background: url(../images/case-3.png) 5px center no-repeat;
  background-size: 100%;
}
.case-r{
  display: inline-block;
  width: 19%;
}
.case-r li{
  display: inline-block;
  padding: 40px;
  overflow: hidden;
}
.case-r-t{
  width: 100%;
  height: 230px;
  background: url(../images/case-4.png) center center no-repeat;
  background-size: 100%;
}
.case-r-b{
  width: 100%;
  height: 170px;
  background: #00adef;
  color: #fff;
  text-align: center;
}
.case-r-b i{
  font-size: 30px;
}
.case-r-b a,.case-r-b a:hover,.case-r-b a:active{margin-top: 15px;
  display: block;
  color: #fff;
  text-decoration: none;
}
.footer{
  text-align: center;
}
.go_top {
    text-align: right;
}
.go_top a {
    position: fixed;
    bottom: 110px;
    float: right;
    opacity: .7;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    display: inline-block;
    width: 48px;
    height: 48px; 
    border-radius: 50%;
    background-color: #000;
    color: #efefef;
    text-align: center;
    z-index: 201;
}
.go_top a:hover{
  text-decoration: none;
}
.go_top a i{
  font-size: 25px;
  line-height: 44px;  
}
.go_top a p{
  margin-top: 10px;
  padding: 5px;
  color: #222;
  font-size: 14px;
  background: rgba(255,255,255,.5);
  border-radius: 100%;
}


/*.item_one {
  background-image: url(../images/a_normal.png);
}
.item_one:active, .item_one.on {
  background-image: url(../images/a_on.png);
}
.item_two {
  background-image: url(../images/s_normal.png);
}
.item_two:active, .item_two.on {
  background-image: url(../images/s_on.png);
}
.item_three {
  background-image: url(../images/p_normal.png);
}
.item_three:active, .item_three.on {
  background-image: url(../images/p_on.png);
}
.item_four {
  background-image: url(../images/c_normal.png);
}
.item_four:active, .item_four.on {
  background-image: url(../images/c_on.png);
}*/

.nav-bg-inner{
  padding-top: 200px;
  height: 430px;
  background: url(../images/bg-inner.jpg) #fff center 80px no-repeat;
  background-size: 100%;
  text-align: center;
}
.box{
  display: flex;
}
.item-box{
  flex: 1;
  max-width:48%;
  margin-bottom: 30px;
  padding: 15px;
  box-shadow: 0px 1px 5px rgba(0, 0, 0, 0.3);
  border-left: 4px solid #42A3D5;
  border-radius: 4px;
  background: #fff;
}
.item-box.right{
  margin-left: 4%;
}
.item-box p{
  padding-left: 10px;
}
.item-box p a{
  color: #000;
}
.item-box .more{
  float: right;
}
.item-box .more a{
 color: #42A3D5;
}
.item-nav{
  display: inline-block;
  width: 20%;
  box-shadow: 0px 1px 5px rgba(0, 0, 0, 0.3);
  border-left: 4px solid #42A3D5;
  border-radius: 4px;
  background: #fff;
  vertical-align: top;
}
.item-nav p{
  padding: 10px 15px;
  cursor: pointer;
}
.item-nav p a{
  color: #000;
}
.item-nav p.selected{
  background: #F7F4F8;
}
.item-nav p.selected a{
  color: #42A3D5;
}
.item-container{
  display: inline-block;
  width: 70%;
  margin-left: 35px;
  padding: 25px;
  box-shadow: 0px 1px 5px rgba(0, 0, 0, 0.3);
  border-radius: 4px;
  background: #fff;
}
.item-container p{
  padding: 5px 0;
  line-height: 24px;
  text-indent: 15px;
}
.item-container p a{
  text-decoration: none;
  color: #000;
}
.item-container>img{
  margin: 15px auto;
  max-width: 100%;
}
.item-exp{
  width: 100%;
  margin-left: 35px;
  padding: 25px;
  box-shadow: 0px 1px 5px rgba(0, 0, 0, 0.3);
  border-radius: 4px;
  background: #fff;
}
.subnav{
}
.subnav>li{
  margin-left: 30px;
  cursor: pointer;
  line-height: 24px;
  list-style-type: circle;
}
.subnav_on{
  color: #42A3D5;
}
.main_01_title {
    width: 1200px;
    margin: 0 auto;
    background: url(../img/images/index_12.png) no-repeat bottom center;
    height: 250px;
    font-family: 微软雅黑;
    position: relative;
}
.main_01_title span {
    font-size: 22px;
    display: block;
    width: 120px;
    height: 35px;
    background: #fff;
    top: 96px;
    left: 605px;
    font-weight: bold;
    color: #00adef;
    position: relative;
    line-height: 35px;
    text-align: center;
}
.main_01_title .shuzi {
    font-size: 100px;
    font-weight: bold;
    color: #00adef;
    width: 500px;
    margin: 0 auto;
    text-align: center;
    line-height: 100px;
}
.main_01_title .neirong1 {
    font-size: 18px;
    color: #4b4b4b;
    text-align: center;
    font-weight: bold;
    line-height: 50px;
}
.main_01_title .neirong2 {
    font-size: 14px;
    color: #4b4b4b;
    text-align: center;
    line-height: 20px;
    width: 600px;
    margin: 0 auto;
    padding-top: 10px;
}